Additional reference lists. This file contains references for all studies used in the meta-analysis, all studies
not used with justifications based on inclusion criteria, and the list of authors
who contributed additional data to this study. Detailed notes on locations of data
within each published study, how study data were supplemented with data provided by
authors, and details of the recalculations performed, are provided in the 'Notes'
column in the original model. This model is freely available for download from the
link in this study.

Data in spreadsheet format. This file contains randomized and resampled data by product at the 5th-, 10th-, 90th-,
and 95th-percentiles, mean and median; data without randomization at the minimum and
maximum; and GHG emissions under IPCC AR4 and AR5 characterizations. Data are provided
under different functional units: Retail Weight; Nutritional Units (table S1); and
food balance sheet equivalent weights (ref. 129). Sample sizes are provided for each
indicator by n = observations and n = farm/regional inventories, where one observation is a line in the database and
can represent multiple similar farms. This file also includes measures of skew by
product, and R2, p-values, and sample sizes from the regressions in figs. S4, and S5.